Near Appliance Piping Components - RBI Infinite Energy2 IW199 Installation And Operation Instructions Manual

7 - INSTALLATION - Water connections
7.4 - Near appliance
piping components
System piping MUST be sized
considering the pressure drops of the
appliance (see Figure 7-2), pipings
and storage tank.
Reducing the pipe size can restrict
the flow rate through the appliance,
causing poor system performance.
Basic steps are listed below along
with illustrations on Figure 7-5 and
7-6, which will guide you through the
installation of the appliance.
1.- Connect the cold water supply to
the inlet side of the appliance;
2.- Connect the hot water supply to
the outlet side of the appliance;
3.- Install a backflow preventer (field
supplied) on the cold feed make-up
water line;
4.- Install a field supplied pump as
shown in Figure 7-5 or 7-6;
5.- Install a field supplied expansion
tank on the cold water inlet.
Consult the tank manufacturer's
instruction for specific information
relating to tank installation. Size
the expansion tank for the required
system volume and capacity;
6.- Install a drain valve at the lowest
point of the system;
7.- Pipe the discharge outlet of
any Pressure and temperature
relief valve following Section 7.5.
The temperature and pressure
relief valve is sized to ASME
specifications. Storage tanks may
require additional valves depending
on local codes;
8.- Appliance isolation valves: Field
supplied. Install isolation valves
as shown on Figure 7-5 or 7-6.
Full port ball valves are required.
Failure to use full port ball valves
could result in a restricted flow rate
through the appliance;
9.- Anti-scald mixing valve: Field
supplied. Install an anti-scald
mixing valve as shown on Figure
7-5 or 7-6. An Anti scald mixing
valve is recommended when
storing domestic hot water above
115°F;
10.- Unions: Field supplied. Install
Unios as shown on Figure 7-5
or 7-6, recommended for unit
serviceability;
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11.- Tank sensor: Factory supplied on
appliance. The tank sensor MUST
be installed in the lower 25% of
the storage tank to achieve proper
operation;
12.- Filter: Field supplied. Install a
filter or equivalent multipurpose
strainer at the cold water inlet
connection of the appliance to
remove system particles from older
hydronic systems and protect newer
systems. NOTICE! Filter will be able
to stops particles with an equivalent
volume of a spheres with diameter
of 0.04" (1mm).
CAUTION!!!
If you install the
appliance without storage tank
(see Figure 7-6) a sendary return
pump is mandatory and sized to
warrant a minimum 9 GPM (2,000
l/h) water flow into the secondary
return circuit.